Uploaded July 2019 | Updated September 2026, 2 weeks ago

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Variable voltage and current power supply circuit. How to regulate amps and voltage.

The features of the laboratory power supply I made in this video are as follows:
120W 1.2-24 Volt voltage adjustment & 0.2 - 9A Current Adjustment possibility.
Arduino controlled 2-stage cooling fan system
Instant monitoring of temperature in the box via OLED display.
Constant voltage output of 5 volts, max. 75 watts.

MUSTOOL MT8206 2 in 1 Intelligent Digital Oscilloscope Multimeter
https://ban.ggood.vip/RvRx
DANIU PX-988 90W Digital Thermostat Adjustable Iron Soldering
https://ban.ggood.vip/RvRz

Circuit diagrams and Code: rcpano.net/2019/07/25/752

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KendinYap Channel youtube.com/channel/UCgjJGE17yfovAvWUzEJFENA

5V & 12V Regulator Circuit Required materials:

1 x 7805 Integrated Regulator
banggood.com/custlink/3mK3adIGQ2

1 x 7812 Integrated Regulator
banggood.com/custlink/vGDDjYSGAu

2 x 0.33uF Capacitor
2 x 0.1uF Capacitor
banggood.com/custlink/mDKGOYZmM3

Two Level Fan Control Circuit Required Materials:

1 x Arduino Pro Mini (5V): banggood.com/custlink/vmDGoYZKSt

1 x 18B20 Temperature Sensor
banggood.com/custlink/G33KjhZD2J

2 x S8050 NPN Transistor
banggood.com/custlink/3KGGLySvqi

2 x 270R Resistor
banggood.com/custlink/GGKDoYZG2w

1 x 0.91 inc Oled Display
banggood.com/custlink/K33Gjd8Gjk

1 x 8cm Fan 12V
banggood.com/custlink/K3mGly9mb0

1 x 5-6cm Fan 12V
banggood.com/custlink/mvGvldIDbA

Other Materials Required for Power Supply:

1 x Laboratory type power supply box - bit.ly/30TKE3Z

1 x Min. 24V 120W SMPS metal case adapter
banggood.com/custlink/KvDKOEIDld

1 x XL4016 300W Adjustable Regulator Module
banggood.com/custlink/K3vGoyZKls

1 x XL4005 75W Regulator Module banggood.com/custlink/Gv3Dah8DZa

1 x 100V & 10A Voltmeter
banggood.com/custlink/GKmvOYSmig

2 x 10K multi-turn potentiometer
banggood.com/custlink/GDGDly9KB8

4 x 4mm Banana type female socket
banggood.com/custlink/D3KmoY9K6m

Digital Multimeter: banggood.com/custlink/vKmD0TlCqE
Solder iron welding:
Digital Thermostat Adjustable 90W: banggood.com/custlink/mv3301OWkA
Digital Thermostat Adjustable 80W: banggood.com/custlink/vDDKBBDsd0